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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 114 - 120 (7page)
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초록· 키워드
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Objectives The aim of this study was to compare the push-out bond strength and dentinal tubule penetration of root canal sealers used with coated core materials and conventional gutta-percha.
Materials and Methods A total of 72 single-rooted human mandibular incisors were instrumented with NiTi rotary files with irrigation of 2.5% NaOCl. The smear layer was removed with 17% ethylenediaminetetraacetic acid (EDTA). Specimens were assigned into four groups according to the obturation system: Group 1, EndoRez (Ultradent Product Inc.); Group 2, Activ GP (Brasseler); Group 3, SmartSeal (DFRP Ltd. Villa Farm); Group 4, AH 26 (Dentsply de Trey)/gutta-percha (GP). For push-out bond strength measurement, two horizontal slices were obtained from each specimen (n = 20). To compare dentinal tubule penetration, remaining 32 roots assigned to 4 groups as above were obturated with 0.1% Rhodamine B labeled sealers. One horizontal slice was obtained from the middle third of each specimen (n = 8) and scanned under confocal laser scanning electron microscope. Tubule penetration area, depth, and percentage were measured. Kruskall-Wallis test was used for statistical analysis.
Results EndoRez showed significantly lower push-out bond strength than the others (p < 0.05). No significant difference was found amongst the groups in terms of percentage of sealer penetration. SmartSeal showed the least penetration than the others (p < 0.05).
Conclusions The bond strength and sealer penetration of resin-and glass ionomer-based sealers used with coated core was not superior to resin-based sealer used with conventional GP. Dentinal tubule penetration has limited effect on bond strength. The use of conventional GP with sealer seems to be sufficient in terms of push-out bond strength.
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참고문헌 (34)
참고문헌 신청
Rôças IN / 2014 / Susceptibility of as-yet-uncultivated and difficult-toculture bacteria to chemomechanical procedures / J Endod 40:33~37
Siqueira JF Jr. / 1999 / Mechanical reduction of the bacterial population in the root canal by three instrumentation techniques / J Endod 25:332~335
Tay FR / 2007 / Monoblocks in root canals: a hypothetical or a tangible goal / J Endod 33:391~398
Kim YK / 2010 / Critical review on methacrylate resin-based root canal sealers / J Endod 36:383~399
Hammad M / 2009 / Evaluation of root canal obturation: a three-dimensional in vitro study / J Endod 35:541~544
Siqueira JF Jr. / 1999 / Mechanical reduction of the bacterial population in the root canal by three instrumentation techniques / J Endod 25:332~335
Tay FR / 2007 / Monoblocks in root canals: a hypothetical or a tangible goal / J Endod 33:391~398
Kim YK / 2010 / Critical review on methacrylate resin-based root canal sealers / J Endod 36:383~399
Hammad M / 2009 / Evaluation of root canal obturation: a three-dimensional in vitro study / J Endod 35:541~544
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